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High Performance Polymers
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Liquid Crystalline Epoxy Azomethine Thermoset

Alice Mititelu-Mija

University of Nice Sophia Antipolis C.M.O.M. Thermokinetic Group, 06108, Nice Cedex 2, France

Constantin N. Cascaval

"Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda, nr.41A, Iasi, 700487, Romania, cascaval{at}icmpp.ro

An investigation was carried out on the curing reaction of a liquid crystalline epoxy monomer, N, N'-bis[4-(2,3-epoxypropoxy)benzylydene]-1,4-phenylenediamine, with an aromatic diamine, sulfanilamide (SAA). The complexity of the curing involves the competition of the reactivities of a primary amine and a secondary amine and also a difference in reactivity of the amine and the amide functional groups from SAA. These phenomena have been studied by differential scanning calorimetry (DSC) under isothermal and non-isothermal conditions. The stability of the mesophase during cross-linking reaction was investigated by polarized optical microscopy (POM) and X-ray diffraction (WAXS).

Key Words: azomethine • mesogen • nematic texture • liquid crystalline epoxy

This version was published on April 1, 2007

High Performance Polymers, Vol. 19, No. 2, 135-146 (2007)
DOI: 10.1177/0954008306072332
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